公开(公告)号：US12040597B2

公开(公告)日：2024-07-16

申请号：US17384135

申请日：2021-07-23

Applicant: TeraXion Inc.

Inventor： Sylvain Boudreau ,  Keven Bédard ,  Michel Morin ,  François Costin ,  André Babin ,  Simon Ayotte

IPC: H01S5/32 ,  H01S5/065 ,  H01S5/125

CPC classification number: H01S5/32 ,  H01S5/0655 ,  H01S5/125

Abstract: A semiconductor laser comprising a single mode laser cavity having a stack of semiconducting layers defining a transversal p-n junction is provided. A plurality of electrodes are coupled to corresponding sections of the laser cavity along the longitudinal light propagation direction, each corresponding section defining one of an amplification section or a modulation section. One or more DC sources are coupled to the electrodes associated with the amplification sections to forward-bias the p-n junction above transparency, so as to provide gain in the associated amplification sections. One or more modulation signal sources are coupled to the electrodes associated with the modulation sections, and apply a modulation signal across the p-n junction below transparency, the modulation signal providing a modulation of an output optical frequency of the semiconductor laser. Each modulation section is operated in photovoltaic mode.

公开(公告)号：US20200333529A1

公开(公告)日：2020-10-22

申请号：US16866861

申请日：2020-05-05

Applicant: TERAXION INC.

Inventor： Guillaume BROCHU ,  Michel Morin ,  François TRÉPANIER

IPC: G02B6/02

Abstract: Optical fiber filters and uses thereof are presented. In typical implementations, there is provided a FBG taking deleterious light out of a fiber core without reflecting it into the fiber core. It also allows the unhindered transmission of useful light at a wavelength outside of the spectral band covered by the deleterious light. The filter couples the incoming deleterious light to cladding modes propagating in the opposite direction without coupling the incoming useful light to core or cladding modes propagating in the opposite direction. The filter may for example be useful as a Raman or ASE filter in a laser cavity of other optical devices.

公开(公告)号：US20190339446A1

公开(公告)日：2019-11-07

申请号：US16515132

申请日：2019-07-18

Applicant: TERAXION INC.

Inventor： Guillaume BROCHU ,  Michel MORIN ,  Françios TRÉPANIER

IPC: G02B6/02

Abstract: Optical fiber filters and uses thereof are presented. In typical implementations, there is provided a FBG taking deleterious light out of a fiber core without reflecting it into the fiber core. It also allows the unhindered transmission of useful light at a wavelength outside of the spectral band covered by the deleterious light. The filter couples the incoming deleterious light to cladding modes propagating in the opposite direction without coupling the incoming useful light to core or cladding modes propagating in the opposite direction. The filter may for example be useful as a Raman or ASE filter in a laser cavity of other optical devices.

公开(公告)号：US09477036B2

公开(公告)日：2016-10-25

申请号：US14718273

申请日：2015-05-21

Applicant: TERAXION INC.

Inventor： François Pelletier

IPC: G02B6/34 ,  G02B6/02 ,  B23K26/34 ,  B23K26/32

CPC classification number: G02B6/02195 ,  B23K26/21 ,  B23K26/262 ,  B23K26/282 ,  B23K26/32 ,  B23K26/34 ,  B23K2101/04 ,  B23K2103/166 ,  G02B6/0218 ,  G02B6/022 ,  G02B6/02209

Abstract: A post-assembly wavelength-tuning method for an optical filter provided along an optical fiber mounted under tension in a packaging assembly is provided. The packaging assembly includes at least one packaging component mechanically coupled to the optical fiber and optically accessible from outside of the packaging assembly. The method includes a step of measuring a post-assembly spectral response of the optical filter and determining therefrom a spectral deviation with respect to a target spectral response. The method also includes a step of forming one or more laser-welded zones on the packaging component so as to cause a permanent deformation thereof. The permanent deformation induces a modification in length of the optical fiber, thereby changing the post-assembly spectral response of the optical filter to compensate for the measured spectral deviation.

Abstract translation: 提供了一种用于沿着安装在包装组件中的张力下的光纤设置的滤光器的后装配波长调谐方法。 包装组件包括至少一个机械耦合到光纤并且可从包装组件的外部光学地接近的包装部件。 该方法包括测量光学滤波器的装配后光谱响应并由此确定相对于目标光谱响应的光谱偏差的步骤。 该方法还包括在包装部件上形成一个或多个激光焊接区域以使其永久变形的步骤。 永久变形引起光纤长度的改变，从而改变光学滤波器的组装后光谱响应，以补偿测量的光谱偏差。

公开(公告)号：US09244327B2

公开(公告)日：2016-01-26

申请号：US14263491

申请日：2014-04-28

Applicant: TERAXION INC.

Inventor： Kelvin Prosyk

IPC: G02F1/035 ,  G02F1/225 ,  G02F1/01 ,  G02F1/21

CPC classification number: G02F1/225 ,  G02F1/0123 ,  G02F2001/212 ,  G02F2201/126 ,  G02F2201/127

Abstract: Mach-Zehnder optical modulators and IQ modulators based on a series push-pull travelling wave electrode are provided. The modulator includes a conductive backplane providing an electrical signal path. One or more voltage control taps are electrically connected to the conductive backplane within an area underneath the travelling wave electrode and provide an equalizing DC control voltage to the conductive backplane. In other variants, a plurality of conductive backplane segments are provided, and at least one voltage control tap is electrically connected to each conductive backplane segment within an area underneath the travelling wave electrode and provides a DC control voltage to the corresponding conductive backplane segment.

Abstract translation: 提供了基于串联推挽行波电极的马赫 - 曾德尔光学调制器和IQ调制器。 调制器包括提供电信号路径的导电背板。 一个或多个电压控制抽头在行波电极下面的区域内电连接到导电背板，并向导电背板提供均衡的直流控制电压。 在其他变型中，提供多个导电背板段，并且至少一个电压控制抽头电连接到在行波电极下面的区域内的每个导电背板段，并向对应的导电底板段提供DC控制电压。

公开(公告)号：US20140153860A1

公开(公告)日：2014-06-05

申请号：US14075854

申请日：2013-11-08

Applicant: TERAXION INC.

Inventor： Kelvin Prosyk

IPC: G02F1/225

CPC classification number: G02F1/225 ,  G02F1/2257 ,  G02F2201/127

Abstract: A Mach-Zehnder optical modulator with a travelling wave electrode has a signal transmission line conductor (S) carrying an input electrical signal, and two ground transmission line conductors (G1 and G2) providing a return path for the electrical signal. The signal transmission line conductor is positioned between the first and second ground lines, and the first and second optical waveguide branches are positioned between the signal transmission line conductor and the first ground line. The modulator therefore has a GSG structure providing an asymmetrically-loaded configuration.

Abstract translation: 具有行波电极的马赫 - 策德尔光调制器具有承载输入电信号的信号传输线导体（S）和提供电信号返回路径的两个接地传输线导体（G1和G2）。 信号传输线导体位于第一和第二接地线之间，第一和第二光波导分支位于信号传输线导体和第一接地线之间。 因此，调制器具有提供非对称加载配置的GSG结构。

公开(公告)号：US07142292B2

公开(公告)日：2006-11-28

申请号：US10831338

申请日：2004-04-23

Applicant: Yves Painchaud

Inventor： Yves Painchaud

IPC: G01N21/00

CPC classification number: G02B6/02152 ,  G02B6/02123 ,  G02B6/02171 ,  G02B6/02185

Abstract: Methods to improve the optical properties of Bragg gratings are disclosed. A first method includes a post correction of the refractive index profile by applying an average index correction thereto. The average index correction is obtained through an analysis of the defects of the refractive index profile characterised through a reconstruction thereof. A second method includes a pre-correction to the refractive index profile by characterising the defects of a test grating, and again calculating an average index correction based thereon. Further gratings are then made using a corrected refractive index profile.

Abstract translation: 公开了改善布拉格光栅的光学特性的方法。 第一种方法包括通过对其进行平均指数校正来对折射率分布进行后校正。 通过对通过其重建表征的折射率分布的缺陷的分析来获得平均指数校正。 第二种方法包括通过表征测试光栅的缺陷对折射率分布进行预校正，并且再次基于此计算平均折射率校正。 然后使用校正的折射率分布来制作另外的光栅。

公开(公告)号：US06842567B2

公开(公告)日：2005-01-11

申请号：US10360548

申请日：2003-02-06

Applicant: Richard L. Lachance ,  Philippe Pépin ,  Tristan Rüthers ,  François Pelletier

Inventor： Richard L. Lachance ,  Philippe Pépin ,  Tristan Rüthers ,  François Pelletier

IPC: G02F1/01 ,  G02B6/34

CPC classification number: G02F1/0115 ,  G02B6/02085 ,  G02B6/02204 ,  G02B6/02209 ,  G02F1/0147 ,  G02F2201/307

Abstract: The present invention discloses practical and power efficient assemblies for applying a temperature gradient to a fiber Bragg grating. An application of such assemblies is, for example, the active tuning of the chromatic dispersion of the grating. The temperature gradient is produced in a heat conductive element, with which the FBG is in continuous thermal contact, by elements controlling the temperature of the ends of the heat conductive element, thereby applying the temperature gradient to the FBG. A first preferred embodiment includes a heat recirculation member allowing the recirculation of heat between the two ends of the heat conductive elongated element, thereby providing a rapid and dynamical tuning of the temperature gradient with a minimal heat loss. A second embodiment provides isolation from the surrounding environment in order to decouple the desired temperature gradient from ambient temperature fluctuations, thereby improving the control of the optical response of a fiber grating.

Abstract translation: 本发明公开了一种用于向光纤布拉格光栅施加温度梯度的实用和功率有效的组件。 这种组件的应用是例如光栅的色散的主动调谐。 通过控制导热元件端部温度的元件，通过FBG与FBG连续热接触的导热元件产生温度梯度，从而将温度梯度应用于FBG。 第一优选实施例包括热再循环构件，其允许在导热细长元件的两端之间再循环热，从而以最小的热损失提供温度梯度的快速和动态调谐。 第二实施例提供与周围环境的隔离，以便将期望的温度梯度与环境温度波动分离，由此改善光纤光栅的光响应的控制。

公开(公告)号：US20040161195A1

公开(公告)日：2004-08-19

申请号：US10695658

申请日：2003-10-28

Applicant: Teraxion Inc.

Inventor： Pierre Bernard ,  Nathalie Gregoire ,  Ghislain Lafrance

IPC: G02B006/34

CPC classification number: G02B6/02185 ,  G02B5/1857

Abstract: A method for manufacturing a FBG having improved performances and an annealing-trimming apparatus for making the same are provided. The trimming and the annealing steps are advantageously combined into a single process in order to efficiently fabricate complex FBG filters with improved performance. The method comprises the steps of UV-writing a FBG in an optical fiber prior to annealing-trimming characteristics of the FBG by performing the sub-steps of monitoring characteristic data of the FBG while generating a controlled complex temperature profile along the FBG with a heating means according to the characteristic data for providing an accurate controlled annealing process of the FBG, thereby providing an accurate trimming thereof.

Abstract translation: 提供一种制造具有改进性能的FBG的方法和用于制造其的退火修剪装置。 修整和退火步骤有利地组合成单个工艺，以便有效地制造具有改进性能的复杂FBG过滤器。 该方法包括以下步骤：在FBG的退火修整特性之前，通过执行监视FBG的特性数据的子步骤，同时沿着FBG生成受控的复合温度曲线，在光纤中UV-write FBG 根据用于提供FBG的精确控制退火处理的特性数据的装置，从而提供其精确的修整。

公开(公告)号：US20030072003A1

公开(公告)日：2003-04-17

申请号：US09975836

申请日：2001-10-11

Applicant: TERAXION INC.

Inventor： Francois Trepanier

IPC: G01B009/02

CPC classification number: G02B5/1857

Abstract: A system and a method for recording interference fringes in a photosensitive medium. Two light beams are guided along different light paths to impinge on a photosensitive medium, where they interfere to produce the interference fringes. One of the beam is reflected along its path on a delay mirror forming a fixed angle null with respect to the plane of the photosensitive medium. Both the photosensitive medium and delay mirror are translated with respect to the light paths of the two beams, thereby recording the interference fringes all along the medium. The angle null is chosen so that the interference pattern is fixed relative to the photosensitive medium along its length.

Abstract translation: 用于在光敏介质中记录干涉条纹的系统和方法。 两个光束沿着不同的光路被引导以照射到感光介质上，在这些光敏介质上它们干涉以产生干涉条纹。 光束中的一个沿着其路径反射在延迟反射镜上，相对于感光介质的平面形成固定角度φi。 感光介质和延迟镜都相对于两个光束的光路平移，从而沿着介质记录干涉条纹。 角度phi被选择为使得干涉图案相对于沿其长度的光敏介质是固定的。